4366: Which one of the following crops enriches the nitrogen content in soil ?
(a) Potato
(b) Sorghum
(c) Sunflower
(d) Pea
4367: Human Development Index comprises literacy rates, life expectancy at birth and
(a) Gross Domestic Product per head in US dollars
(b) Gross Domestic Product per head at real purchasing power
(c) Gross National Product in US dollars
(d) National Income per head in US dollars
4368: What was Komagata Maru?
(a) A political party based in Taiwan
(b) Peasant communist leader of China
(c) A naval ship on voyage to Canada
(d) A Chinese village where Mao Tse Tung began his Long march
4369: What can be the impact of excessive / inappropriate use of nitrogenous fertilizers in agriculture?
1. Proliferation of nitrogen-fixing microorganisms in soil can occur.
2. Increase in the acidity of soil can take place.
3. Leaching of nitrate to the ground-water can occur.
Select the correct answer using the code given below.
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
4370: Consider the following :
1. Bats
2. Bears
3. Rodents
The phenomenon of hibernation can be observed in which of the above kinds of animals?
(a) 1 and 2 only
(b) 2 only
(c) 1, 2 and 3
(d) Hibernation cannot be observed in any of the above.